package org.shiwen.week6.friday;

public class Q2 {
    public static void main(String[] args) {
        Student s1 = new Student("a", 18);
        Student s2 = new Student("a", 18,"bb");
        Student s3 = new Student("a", 18,"cc","dd");

        System.out.println(s1.show2());
        s2.show();
    }
}
